diff --git a/config/nginx/nginx.conf b/config/nginx/nginx.conf
index 024df9a..0f624d1 100644
--- a/config/nginx/nginx.conf
+++ b/config/nginx/nginx.conf
@@ -9,6 +9,9 @@ server {
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_redirect off;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_http_version 1.1;
   }
 
   if ($http_x_forwarded_proto != 'https') {